WO2008023836A1 - Procédé de fabrication d'un composé du benzaldéhyde - Google Patents
Procédé de fabrication d'un composé du benzaldéhyde Download PDFInfo
- Publication number
- WO2008023836A1 WO2008023836A1 PCT/JP2007/066820 JP2007066820W WO2008023836A1 WO 2008023836 A1 WO2008023836 A1 WO 2008023836A1 JP 2007066820 W JP2007066820 W JP 2007066820W WO 2008023836 A1 WO2008023836 A1 WO 2008023836A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- compound
- group
- reaction
- acid
- hexamethylenetetramine
- Prior art date
Links
- -1 benzaldehyde compound Chemical class 0.000 title claims abstract description 152
- 238000000034 method Methods 0.000 title claims abstract description 62
- HUMNYLRZRPPJDN-UHFFFAOYSA-N benzenecarboxaldehyde Natural products O=CC1=CC=CC=C1 HUMNYLRZRPPJDN-UHFFFAOYSA-N 0.000 title claims abstract description 28
- QNGNSVIICDLXHT-UHFFFAOYSA-N para-ethylbenzaldehyde Natural products CCC1=CC=C(C=O)C=C1 QNGNSVIICDLXHT-UHFFFAOYSA-N 0.000 title claims abstract description 27
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 16
- VKYKSIONXSXAKP-UHFFFAOYSA-N hexamethylenetetramine Chemical compound C1N(C2)CN3CN1CN2C3 VKYKSIONXSXAKP-UHFFFAOYSA-N 0.000 claims abstract description 163
- 238000006243 chemical reaction Methods 0.000 claims abstract description 155
- 239000000243 solution Substances 0.000 claims abstract description 84
- 239000004312 hexamethylene tetramine Substances 0.000 claims abstract description 78
- 235000010299 hexamethylene tetramine Nutrition 0.000 claims abstract description 77
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 43
- 239000002904 solvent Substances 0.000 claims abstract description 37
- 150000001875 compounds Chemical class 0.000 claims abstract description 35
- 239000011259 mixed solution Substances 0.000 claims abstract description 30
- 125000001424 substituent group Chemical group 0.000 claims abstract description 26
- 239000002253 acid Substances 0.000 claims abstract description 21
- 125000004432 carbon atom Chemical group C* 0.000 claims abstract description 12
- 238000002156 mixing Methods 0.000 claims abstract description 7
- 125000004122 cyclic group Chemical group 0.000 claims abstract description 6
- 125000004435 hydrogen atom Chemical group [H]* 0.000 claims abstract description 6
- 125000005530 alkylenedioxy group Chemical group 0.000 claims abstract description 5
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 claims description 48
- DWSUJONSJJTODA-UHFFFAOYSA-N 5-(chloromethyl)-1,3-benzodioxole Chemical compound ClCC1=CC=C2OCOC2=C1 DWSUJONSJJTODA-UHFFFAOYSA-N 0.000 claims description 42
- KCXMKQUNVWSEMD-UHFFFAOYSA-N benzyl chloride Chemical compound ClCC1=CC=CC=C1 KCXMKQUNVWSEMD-UHFFFAOYSA-N 0.000 claims description 19
- 229940073608 benzyl chloride Drugs 0.000 claims description 19
- UHOVQNZJYSORNB-UHFFFAOYSA-N Benzene Chemical group C1=CC=CC=C1 UHOVQNZJYSORNB-UHFFFAOYSA-N 0.000 claims description 15
- DTQVDTLACAAQTR-UHFFFAOYSA-N Trifluoroacetic acid Chemical compound OC(=O)C(F)(F)F DTQVDTLACAAQTR-UHFFFAOYSA-N 0.000 claims description 10
- 150000004945 aromatic hydrocarbons Chemical class 0.000 claims description 10
- 150000002430 hydrocarbons Chemical class 0.000 claims description 10
- LSNNMFCWUKXFEE-UHFFFAOYSA-M Bisulfite Chemical compound OS([O-])=O LSNNMFCWUKXFEE-UHFFFAOYSA-M 0.000 claims description 9
- WSFSSNUMVMOOMR-UHFFFAOYSA-N Formaldehyde Chemical compound O=C WSFSSNUMVMOOMR-UHFFFAOYSA-N 0.000 claims description 9
- NBIIXXVUZAFLBC-UHFFFAOYSA-N Phosphoric acid Chemical compound OP(O)(O)=O NBIIXXVUZAFLBC-UHFFFAOYSA-N 0.000 claims description 8
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 claims description 8
- 238000002360 preparation method Methods 0.000 claims description 8
- 150000007933 aliphatic carboxylic acids Chemical class 0.000 claims description 7
- 125000003118 aryl group Chemical group 0.000 claims description 6
- 229910000147 aluminium phosphate Inorganic materials 0.000 claims description 4
- RTZKZFJDLAIYFH-UHFFFAOYSA-N ether Substances CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 claims description 4
- IXCSERBJSXMMFS-UHFFFAOYSA-N hydrogen chloride Substances Cl.Cl IXCSERBJSXMMFS-UHFFFAOYSA-N 0.000 claims description 4
- 229910000041 hydrogen chloride Inorganic materials 0.000 claims description 4
- 150000003460 sulfonic acids Chemical class 0.000 claims description 4
- 125000002947 alkylene group Chemical group 0.000 claims description 3
- DNIAPMSPPWPWGF-GSVOUGTGSA-N (R)-(-)-Propylene glycol Chemical compound C[C@@H](O)CO DNIAPMSPPWPWGF-GSVOUGTGSA-N 0.000 claims description 2
- 125000001931 aliphatic group Chemical group 0.000 claims description 2
- 150000001338 aliphatic hydrocarbons Chemical class 0.000 claims description 2
- 239000004202 carbamide Substances 0.000 claims description 2
- 229910052799 carbon Inorganic materials 0.000 claims description 2
- 238000007265 chloromethylation reaction Methods 0.000 claims description 2
- 150000003839 salts Chemical class 0.000 abstract description 18
- 125000005843 halogen group Chemical group 0.000 abstract description 6
- 125000001997 phenyl group Chemical group [H]C1=C([H])C([H])=C(*)C([H])=C1[H] 0.000 abstract description 5
- 125000001183 hydrocarbyl group Chemical group 0.000 abstract 1
- QTBSBXVTEAMEQO-UHFFFAOYSA-N Acetic acid Chemical compound CC(O)=O QTBSBXVTEAMEQO-UHFFFAOYSA-N 0.000 description 94
- 229960004011 methenamine Drugs 0.000 description 72
- XEKOWRVHYACXOJ-UHFFFAOYSA-N Ethyl acetate Chemical compound CCOC(C)=O XEKOWRVHYACXOJ-UHFFFAOYSA-N 0.000 description 45
- 229960000583 acetic acid Drugs 0.000 description 32
- 239000000203 mixture Substances 0.000 description 32
- 235000011054 acetic acid Nutrition 0.000 description 30
- 239000012044 organic layer Substances 0.000 description 29
- YXFVVABEGXRONW-UHFFFAOYSA-N Toluene Chemical compound CC1=CC=CC=C1 YXFVVABEGXRONW-UHFFFAOYSA-N 0.000 description 23
- UIIMBOGNXHQVGW-UHFFFAOYSA-M Sodium bicarbonate Chemical compound [Na+].OC([O-])=O UIIMBOGNXHQVGW-UHFFFAOYSA-M 0.000 description 18
- 238000010992 reflux Methods 0.000 description 18
- 238000003786 synthesis reaction Methods 0.000 description 17
- 230000015572 biosynthetic process Effects 0.000 description 16
- 238000004128 high performance liquid chromatography Methods 0.000 description 15
- 230000002195 synergetic effect Effects 0.000 description 15
- 229920006395 saturated elastomer Polymers 0.000 description 14
- HPALAKNZSZLMCH-UHFFFAOYSA-M sodium;chloride;hydrate Chemical class O.[Na+].[Cl-] HPALAKNZSZLMCH-UHFFFAOYSA-M 0.000 description 13
- AFVFQIVMOAPDHO-UHFFFAOYSA-N Methanesulfonic acid Chemical compound CS(O)(=O)=O AFVFQIVMOAPDHO-UHFFFAOYSA-N 0.000 description 12
- 238000012360 testing method Methods 0.000 description 11
- 230000000052 comparative effect Effects 0.000 description 10
- ZRSNZINYAWTAHE-UHFFFAOYSA-N p-methoxybenzaldehyde Chemical compound COC1=CC=C(C=O)C=C1 ZRSNZINYAWTAHE-UHFFFAOYSA-N 0.000 description 10
- SATCULPHIDQDRE-UHFFFAOYSA-N piperonal Chemical compound O=CC1=CC=C2OCOC2=C1 SATCULPHIDQDRE-UHFFFAOYSA-N 0.000 description 10
- 238000005406 washing Methods 0.000 description 10
- 235000017557 sodium bicarbonate Nutrition 0.000 description 9
- 229910000030 sodium bicarbonate Inorganic materials 0.000 description 9
- 238000003756 stirring Methods 0.000 description 9
- VEXZGXHMUGYJMC-UHFFFAOYSA-M Chloride anion Chemical compound [Cl-] VEXZGXHMUGYJMC-UHFFFAOYSA-M 0.000 description 8
- 238000011088 calibration curve Methods 0.000 description 8
- 239000007788 liquid Substances 0.000 description 8
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 7
- 239000012295 chemical reaction liquid Substances 0.000 description 7
- 229910052757 nitrogen Inorganic materials 0.000 description 7
- 239000011541 reaction mixture Substances 0.000 description 7
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 6
- LYCAIKOWRPUZTN-UHFFFAOYSA-N Ethylene glycol Chemical compound OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 description 6
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 description 6
- 239000007864 aqueous solution Substances 0.000 description 6
- 150000002148 esters Chemical class 0.000 description 6
- BDAGIHXWWSANSR-UHFFFAOYSA-N methanoic acid Natural products OC=O BDAGIHXWWSANSR-UHFFFAOYSA-N 0.000 description 6
- 239000000047 product Substances 0.000 description 6
- MOHYOXXOKFQHDC-UHFFFAOYSA-N 1-(chloromethyl)-4-methoxybenzene Chemical compound COC1=CC=C(CCl)C=C1 MOHYOXXOKFQHDC-UHFFFAOYSA-N 0.000 description 5
- CPELXLSAUQHCOX-UHFFFAOYSA-M Bromide Chemical compound [Br-] CPELXLSAUQHCOX-UHFFFAOYSA-M 0.000 description 5
- XBDQKXXYIPTUBI-UHFFFAOYSA-N Propionic acid Chemical compound CCC(O)=O XBDQKXXYIPTUBI-UHFFFAOYSA-N 0.000 description 5
- UIIMBOGNXHQVGW-DEQYMQKBSA-M Sodium bicarbonate-14C Chemical compound [Na+].O[14C]([O-])=O UIIMBOGNXHQVGW-DEQYMQKBSA-M 0.000 description 5
- 238000006007 Sommelet synthesis reaction Methods 0.000 description 5
- GQZNPEXGTHGGQV-UHFFFAOYSA-N [bromo(methoxy)methyl]benzene Chemical compound COC(Br)C1=CC=CC=C1 GQZNPEXGTHGGQV-UHFFFAOYSA-N 0.000 description 5
- 125000001797 benzyl group Chemical group [H]C1=C([H])C([H])=C(C([H])=C1[H])C([H])([H])* 0.000 description 5
- 238000000605 extraction Methods 0.000 description 5
- 238000010438 heat treatment Methods 0.000 description 5
- 229940098779 methanesulfonic acid Drugs 0.000 description 5
- 238000000926 separation method Methods 0.000 description 5
- 239000002699 waste material Substances 0.000 description 5
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 description 4
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 4
- VSCWAEJMTAWNJL-UHFFFAOYSA-K aluminium trichloride Chemical compound Cl[Al](Cl)Cl VSCWAEJMTAWNJL-UHFFFAOYSA-K 0.000 description 4
- 239000007806 chemical reaction intermediate Substances 0.000 description 4
- 239000012141 concentrate Substances 0.000 description 4
- 238000007796 conventional method Methods 0.000 description 4
- LELOWRISYMNNSU-UHFFFAOYSA-N hydrogen cyanide Chemical compound N#C LELOWRISYMNNSU-UHFFFAOYSA-N 0.000 description 4
- 238000004445 quantitative analysis Methods 0.000 description 4
- RFFLAFLAYFXFSW-UHFFFAOYSA-N 1,2-dichlorobenzene Chemical compound ClC1=CC=CC=C1Cl RFFLAFLAYFXFSW-UHFFFAOYSA-N 0.000 description 3
- OSWFIVFLDKOXQC-UHFFFAOYSA-N 4-(3-methoxyphenyl)aniline Chemical compound COC1=CC=CC(C=2C=CC(N)=CC=2)=C1 OSWFIVFLDKOXQC-UHFFFAOYSA-N 0.000 description 3
- WVDDGKGOMKODPV-UHFFFAOYSA-N Benzyl alcohol Chemical class OCC1=CC=CC=C1 WVDDGKGOMKODPV-UHFFFAOYSA-N 0.000 description 3
- 235000008733 Citrus aurantifolia Nutrition 0.000 description 3
- YMWUJEATGCHHMB-UHFFFAOYSA-N Dichloromethane Chemical compound ClCCl YMWUJEATGCHHMB-UHFFFAOYSA-N 0.000 description 3
- ZMXDDKWLCZADIW-UHFFFAOYSA-N N,N-Dimethylformamide Chemical compound CN(C)C=O ZMXDDKWLCZADIW-UHFFFAOYSA-N 0.000 description 3
- 229930040373 Paraformaldehyde Natural products 0.000 description 3
- 235000011941 Tilia x europaea Nutrition 0.000 description 3
- 150000001299 aldehydes Chemical class 0.000 description 3
- 125000003342 alkenyl group Chemical group 0.000 description 3
- 125000005278 alkyl sulfonyloxy group Chemical group 0.000 description 3
- 229910021529 ammonia Inorganic materials 0.000 description 3
- 229950007046 chlorphentermine Drugs 0.000 description 3
- 238000004587 chromatography analysis Methods 0.000 description 3
- KRKNYBCHXYNGOX-UHFFFAOYSA-N citric acid Chemical compound OC(=O)CC(O)(C(O)=O)CC(O)=O KRKNYBCHXYNGOX-UHFFFAOYSA-N 0.000 description 3
- 230000007613 environmental effect Effects 0.000 description 3
- 238000005755 formation reaction Methods 0.000 description 3
- 235000019253 formic acid Nutrition 0.000 description 3
- 238000004817 gas chromatography Methods 0.000 description 3
- SWQJXJOGLNCZEY-UHFFFAOYSA-N helium atom Chemical compound [He] SWQJXJOGLNCZEY-UHFFFAOYSA-N 0.000 description 3
- 125000004836 hexamethylene group Chemical group [H]C([H])([*:2])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])[*:1] 0.000 description 3
- 239000004571 lime Substances 0.000 description 3
- 125000004433 nitrogen atom Chemical group N* 0.000 description 3
- 150000007524 organic acids Chemical class 0.000 description 3
- 239000003960 organic solvent Substances 0.000 description 3
- 125000004430 oxygen atom Chemical group O* 0.000 description 3
- 229920002866 paraformaldehyde Polymers 0.000 description 3
- 241000894007 species Species 0.000 description 3
- 229910052717 sulfur Inorganic materials 0.000 description 3
- ITMCEJHCFYSIIV-UHFFFAOYSA-N triflic acid Chemical compound OS(=O)(=O)C(F)(F)F ITMCEJHCFYSIIV-UHFFFAOYSA-N 0.000 description 3
- FTNJQNQLEGKTGD-UHFFFAOYSA-N 1,3-benzodioxole Chemical compound C1=CC=C2OCOC2=C1 FTNJQNQLEGKTGD-UHFFFAOYSA-N 0.000 description 2
- SSIMHHUMYMHNID-UHFFFAOYSA-N 4-(chloromethyl)phenol Chemical compound OC1=CC=C(CCl)C=C1 SSIMHHUMYMHNID-UHFFFAOYSA-N 0.000 description 2
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 2
- IAZDPXIOMUYVGZ-UHFFFAOYSA-N Dimethylsulphoxide Chemical compound CS(C)=O IAZDPXIOMUYVGZ-UHFFFAOYSA-N 0.000 description 2
- 239000005977 Ethylene Substances 0.000 description 2
- IMNFDUFMRHMDMM-UHFFFAOYSA-N N-Heptane Chemical compound CCCCCCC IMNFDUFMRHMDMM-UHFFFAOYSA-N 0.000 description 2
- CTQNGGLPUBDAKN-UHFFFAOYSA-N O-Xylene Chemical compound CC1=CC=CC=C1C CTQNGGLPUBDAKN-UHFFFAOYSA-N 0.000 description 2
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- DKGAVHZHDRPRBM-UHFFFAOYSA-N Tert-Butanol Chemical compound CC(C)(C)O DKGAVHZHDRPRBM-UHFFFAOYSA-N 0.000 description 2
- WYURNTSHIVDZCO-UHFFFAOYSA-N Tetrahydrofuran Chemical compound C1CCOC1 WYURNTSHIVDZCO-UHFFFAOYSA-N 0.000 description 2
- 150000007513 acids Chemical class 0.000 description 2
- 125000000217 alkyl group Chemical group 0.000 description 2
- 229910052786 argon Inorganic materials 0.000 description 2
- 150000003934 aromatic aldehydes Chemical class 0.000 description 2
- 150000003935 benzaldehydes Chemical class 0.000 description 2
- 229940092714 benzenesulfonic acid Drugs 0.000 description 2
- 125000003236 benzoyl group Chemical group [H]C1=C([H])C([H])=C(C([H])=C1[H])C(*)=O 0.000 description 2
- AGEZXYOZHKGVCM-UHFFFAOYSA-N benzyl bromide Chemical compound BrCC1=CC=CC=C1 AGEZXYOZHKGVCM-UHFFFAOYSA-N 0.000 description 2
- 150000005524 benzylchlorides Chemical class 0.000 description 2
- GDTBXPJZTBHREO-UHFFFAOYSA-N bromine Chemical compound BrBr GDTBXPJZTBHREO-UHFFFAOYSA-N 0.000 description 2
- 235000013877 carbamide Nutrition 0.000 description 2
- 229910002091 carbon monoxide Inorganic materials 0.000 description 2
- 239000003054 catalyst Substances 0.000 description 2
- 229910052801 chlorine Inorganic materials 0.000 description 2
- MVPPADPHJFYWMZ-UHFFFAOYSA-N chlorobenzene Chemical compound ClC1=CC=CC=C1 MVPPADPHJFYWMZ-UHFFFAOYSA-N 0.000 description 2
- 239000002537 cosmetic Substances 0.000 description 2
- 238000000354 decomposition reaction Methods 0.000 description 2
- ZUOUZKKEUPVFJK-UHFFFAOYSA-N diphenyl Chemical compound C1=CC=CC=C1C1=CC=CC=C1 ZUOUZKKEUPVFJK-UHFFFAOYSA-N 0.000 description 2
- 125000001301 ethoxy group Chemical group [H]C([H])([H])C([H])([H])O* 0.000 description 2
- 238000001914 filtration Methods 0.000 description 2
- 239000012362 glacial acetic acid Substances 0.000 description 2
- 229910052739 hydrogen Inorganic materials 0.000 description 2
- 230000007062 hydrolysis Effects 0.000 description 2
- 238000006460 hydrolysis reaction Methods 0.000 description 2
- 125000006289 hydroxybenzyl group Chemical group 0.000 description 2
- 239000011261 inert gas Substances 0.000 description 2
- 229910052500 inorganic mineral Inorganic materials 0.000 description 2
- 238000010813 internal standard method Methods 0.000 description 2
- 238000002955 isolation Methods 0.000 description 2
- 239000010410 layer Substances 0.000 description 2
- 235000010755 mineral Nutrition 0.000 description 2
- 239000011707 mineral Substances 0.000 description 2
- VLKZOEOYAKHREP-UHFFFAOYSA-N n-Hexane Chemical compound CCCCCC VLKZOEOYAKHREP-UHFFFAOYSA-N 0.000 description 2
- LQNUZADURLCDLV-UHFFFAOYSA-N nitrobenzene Chemical compound [O-][N+](=O)C1=CC=CC=C1 LQNUZADURLCDLV-UHFFFAOYSA-N 0.000 description 2
- 229940081310 piperonal Drugs 0.000 description 2
- 235000019260 propionic acid Nutrition 0.000 description 2
- 238000000746 purification Methods 0.000 description 2
- IUVKMZGDUIUOCP-BTNSXGMBSA-N quinbolone Chemical compound O([C@H]1CC[C@H]2[C@H]3[C@@H]([C@]4(C=CC(=O)C=C4CC3)C)CC[C@@]21C)C1=CCCC1 IUVKMZGDUIUOCP-BTNSXGMBSA-N 0.000 description 2
- 230000035484 reaction time Effects 0.000 description 2
- 239000007858 starting material Substances 0.000 description 2
- 125000004434 sulfur atom Chemical group 0.000 description 2
- AGGKEGLBGGJEBZ-UHFFFAOYSA-N tetramethylenedisulfotetramine Chemical compound C1N(S2(=O)=O)CN3S(=O)(=O)N1CN2C3 AGGKEGLBGGJEBZ-UHFFFAOYSA-N 0.000 description 2
- 239000008096 xylene Substances 0.000 description 2
- SNQSXNIEPIKWIC-UHFFFAOYSA-N (4-methoxyphenyl)methyl benzenesulfonate Chemical compound COC1=CC=C(COS(=O)(=O)C2=CC=CC=C2)C=C1 SNQSXNIEPIKWIC-UHFFFAOYSA-N 0.000 description 1
- SASMNWWGNNJNAT-UHFFFAOYSA-N 1,3-benzodioxol-5-ylmethyl benzenesulfonate Chemical compound C=1C=C2OCOC2=CC=1COS(=O)(=O)C1=CC=CC=C1 SASMNWWGNNJNAT-UHFFFAOYSA-N 0.000 description 1
- ZPQOPVIELGIULI-UHFFFAOYSA-N 1,3-dichlorobenzene Chemical compound ClC1=CC=CC(Cl)=C1 ZPQOPVIELGIULI-UHFFFAOYSA-N 0.000 description 1
- RYHBNJHYFVUHQT-UHFFFAOYSA-N 1,4-Dioxane Chemical compound C1COCCO1 RYHBNJHYFVUHQT-UHFFFAOYSA-N 0.000 description 1
- OCJBOOLMMGQPQU-UHFFFAOYSA-N 1,4-dichlorobenzene Chemical compound ClC1=CC=C(Cl)C=C1 OCJBOOLMMGQPQU-UHFFFAOYSA-N 0.000 description 1
- GTLWADFFABIGAE-UHFFFAOYSA-N 1-chloroethylbenzene Chemical compound CC(Cl)C1=CC=CC=C1 GTLWADFFABIGAE-UHFFFAOYSA-N 0.000 description 1
- 238000005160 1H NMR spectroscopy Methods 0.000 description 1
- RWVDJHFUELVYHF-UHFFFAOYSA-N 2-(bromomethyl)benzene-1,4-diol Chemical compound OC1=CC=C(O)C(CBr)=C1 RWVDJHFUELVYHF-UHFFFAOYSA-N 0.000 description 1
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- 125000003903 2-propenyl group Chemical group [H]C([*])([H])C([H])=C([H])[H] 0.000 description 1
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- NNVPWGAAGKAPKD-UHFFFAOYSA-N 4-(chloromethyl)benzene-1,2-diol Chemical compound OC1=CC=C(CCl)C=C1O NNVPWGAAGKAPKD-UHFFFAOYSA-N 0.000 description 1
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- KZBUYRJDOAKODT-UHFFFAOYSA-N Chlorine Chemical compound ClCl KZBUYRJDOAKODT-UHFFFAOYSA-N 0.000 description 1
- DTPLOCBWAFWYND-UHFFFAOYSA-N Cl.C=1C=CC=CC=1C(=O)C(=O)C1=CC=CC=C1 Chemical compound Cl.C=1C=CC=CC=1C(=O)C(=O)C1=CC=CC=C1 DTPLOCBWAFWYND-UHFFFAOYSA-N 0.000 description 1
- XDTMQSROBMDMFD-UHFFFAOYSA-N Cyclohexane Chemical compound C1CCCCC1 XDTMQSROBMDMFD-UHFFFAOYSA-N 0.000 description 1
- ZAFNJMIOTHYJRJ-UHFFFAOYSA-N Diisopropyl ether Chemical compound CC(C)OC(C)C ZAFNJMIOTHYJRJ-UHFFFAOYSA-N 0.000 description 1
- VGGSQFUCUMXWEO-UHFFFAOYSA-N Ethene Chemical compound C=C VGGSQFUCUMXWEO-UHFFFAOYSA-N 0.000 description 1
- IAYPIBMASNFSPL-UHFFFAOYSA-N Ethylene oxide Chemical class C1CO1 IAYPIBMASNFSPL-UHFFFAOYSA-N 0.000 description 1
- PXGOKWXKJXAPGV-UHFFFAOYSA-N Fluorine Chemical compound FF PXGOKWXKJXAPGV-UHFFFAOYSA-N 0.000 description 1
- 241001071918 Heliotropium Species 0.000 description 1
- 235000010650 Hyssopus officinalis Nutrition 0.000 description 1
- 240000001812 Hyssopus officinalis Species 0.000 description 1
- 102000006835 Lamins Human genes 0.000 description 1
- 108010047294 Lamins Proteins 0.000 description 1
- FXHOOIRPVKKKFG-UHFFFAOYSA-N N,N-Dimethylacetamide Chemical compound CN(C)C(C)=O FXHOOIRPVKKKFG-UHFFFAOYSA-N 0.000 description 1
- SECXISVLQFMRJM-UHFFFAOYSA-N N-Methylpyrrolidone Chemical compound CN1CCCC1=O SECXISVLQFMRJM-UHFFFAOYSA-N 0.000 description 1
- 238000006828 Rosenmund reduction reaction Methods 0.000 description 1
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical class [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 description 1
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 1
- 241000546339 Trioxys Species 0.000 description 1
- TVXBFESIOXBWNM-UHFFFAOYSA-N Xylitol Natural products OCCC(O)C(O)C(O)CCO TVXBFESIOXBWNM-UHFFFAOYSA-N 0.000 description 1
- YVBSAPDHRXHFHV-UHFFFAOYSA-N [chloro(methoxy)methyl]benzene Chemical compound COC(Cl)C1=CC=CC=C1 YVBSAPDHRXHFHV-UHFFFAOYSA-N 0.000 description 1
- WEVYAHXRMPXWCK-UHFFFAOYSA-N acetonitrile Substances CC#N WEVYAHXRMPXWCK-UHFFFAOYSA-N 0.000 description 1
- 125000002777 acetyl group Chemical group [H]C([H])([H])C(*)=O 0.000 description 1
- 125000003647 acryloyl group Chemical group O=C([*])C([H])=C([H])[H] 0.000 description 1
- 239000003905 agrochemical Substances 0.000 description 1
- 239000003570 air Substances 0.000 description 1
- 150000001298 alcohols Chemical class 0.000 description 1
- 125000003545 alkoxy group Chemical group 0.000 description 1
- 125000004453 alkoxycarbonyl group Chemical group 0.000 description 1
- 125000004390 alkyl sulfonyl group Chemical group 0.000 description 1
- 125000004414 alkyl thio group Chemical group 0.000 description 1
- 125000000304 alkynyl group Chemical group 0.000 description 1
- HSFWRNGVRCDJHI-UHFFFAOYSA-N alpha-acetylene Natural products C#C HSFWRNGVRCDJHI-UHFFFAOYSA-N 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 125000005129 aryl carbonyl group Chemical group 0.000 description 1
- 125000004391 aryl sulfonyl group Chemical group 0.000 description 1
- 239000002585 base Substances 0.000 description 1
- 150000001555 benzenes Chemical class 0.000 description 1
- SRSXLGNVWSONIS-UHFFFAOYSA-N benzenesulfonic acid Chemical compound OS(=O)(=O)C1=CC=CC=C1 SRSXLGNVWSONIS-UHFFFAOYSA-N 0.000 description 1
- 235000019445 benzyl alcohol Nutrition 0.000 description 1
- JOKYYJPVAFRMIT-UHFFFAOYSA-N benzyl benzenesulfonate Chemical class C=1C=CC=CC=1S(=O)(=O)OCC1=CC=CC=C1 JOKYYJPVAFRMIT-UHFFFAOYSA-N 0.000 description 1
- MBXXQYJBFRRFCK-UHFFFAOYSA-N benzyl fluoride Chemical compound FCC1=CC=CC=C1 MBXXQYJBFRRFCK-UHFFFAOYSA-N 0.000 description 1
- QHTRLHAGKRCHKW-UHFFFAOYSA-N benzyl trifluoromethanesulfonate Chemical class FC(F)(F)S(=O)(=O)OCC1=CC=CC=C1 QHTRLHAGKRCHKW-UHFFFAOYSA-N 0.000 description 1
- 125000001743 benzylic group Chemical group 0.000 description 1
- 125000000051 benzyloxy group Chemical group [H]C1=C([H])C([H])=C(C([H])=C1[H])C([H])([H])O* 0.000 description 1
- 239000004305 biphenyl Substances 0.000 description 1
- 235000010290 biphenyl Nutrition 0.000 description 1
- 125000006267 biphenyl group Chemical group 0.000 description 1
- 229910052794 bromium Inorganic materials 0.000 description 1
- 125000004106 butoxy group Chemical group [*]OC([H])([H])C([H])([H])C(C([H])([H])[H])([H])[H] 0.000 description 1
- 125000000484 butyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])C([H])([H])[H] 0.000 description 1
- 238000004364 calculation method Methods 0.000 description 1
- 150000001733 carboxylic acid esters Chemical class 0.000 description 1
- 239000007795 chemical reaction product Substances 0.000 description 1
- 239000000460 chlorine Substances 0.000 description 1
- 125000001309 chloro group Chemical group Cl* 0.000 description 1
- HEZQRPHEDDAJTF-UHFFFAOYSA-N chloro(phenyl)methanol Chemical compound OC(Cl)C1=CC=CC=C1 HEZQRPHEDDAJTF-UHFFFAOYSA-N 0.000 description 1
- 235000015165 citric acid Nutrition 0.000 description 1
- 238000003776 cleavage reaction Methods 0.000 description 1
- 238000004440 column chromatography Methods 0.000 description 1
- ORTQZVOHEJQUHG-UHFFFAOYSA-L copper(II) chloride Chemical compound Cl[Cu]Cl ORTQZVOHEJQUHG-UHFFFAOYSA-L 0.000 description 1
- 238000002425 crystallisation Methods 0.000 description 1
- 230000008025 crystallization Effects 0.000 description 1
- 125000004093 cyano group Chemical group *C#N 0.000 description 1
- 125000004966 cyanoalkyl group Chemical group 0.000 description 1
- 125000002944 cyanoaryl group Chemical group 0.000 description 1
- 125000004802 cyanophenyl group Chemical group 0.000 description 1
- 125000006165 cyclic alkyl group Chemical group 0.000 description 1
- 125000001047 cyclobutenyl group Chemical group C1(=CCC1)* 0.000 description 1
- 125000000582 cycloheptyl group Chemical group [H]C1([H])C([H])([H])C([H])([H])C([H])([H])C([H])(*)C([H])([H])C1([H])[H] 0.000 description 1
- 125000006639 cyclohexyl carbonyl group Chemical group 0.000 description 1
- 125000000113 cyclohexyl group Chemical group [H]C1([H])C([H])([H])C([H])([H])C([H])(*)C([H])([H])C1([H])[H] 0.000 description 1
- 125000002433 cyclopentenyl group Chemical group C1(=CCCC1)* 0.000 description 1
- 125000001511 cyclopentyl group Chemical group [H]C1([H])C([H])([H])C([H])([H])C([H])(*)C1([H])[H] 0.000 description 1
- 125000000298 cyclopropenyl group Chemical group [H]C1=C([H])C1([H])* 0.000 description 1
- 238000006356 dehydrogenation reaction Methods 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000004821 distillation Methods 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000003480 eluent Substances 0.000 description 1
- 125000003754 ethoxycarbonyl group Chemical group C(=O)(OCC)* 0.000 description 1
- 125000000816 ethylene group Chemical group [H]C([H])([*:1])C([H])([H])[*:2] 0.000 description 1
- 125000004705 ethylthio group Chemical group C(C)S* 0.000 description 1
- 125000002534 ethynyl group Chemical group [H]C#C* 0.000 description 1
- 229910052731 fluorine Inorganic materials 0.000 description 1
- 239000011737 fluorine Substances 0.000 description 1
- 125000001153 fluoro group Chemical group F* 0.000 description 1
- 235000013305 food Nutrition 0.000 description 1
- 239000003205 fragrance Substances 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 125000002350 geranyl group Chemical group [H]C([*])([H])/C([H])=C(C([H])([H])[H])/C([H])([H])C([H])([H])C([H])=C(C([H])([H])[H])C([H])([H])[H] 0.000 description 1
- 229940093915 gynecological organic acid Drugs 0.000 description 1
- 150000008282 halocarbons Chemical class 0.000 description 1
- 125000005446 heptyloxy group Chemical group [H]C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])O* 0.000 description 1
- FUZZWVXGSFPDMH-UHFFFAOYSA-N hexanoic acid Chemical compound CCCCCC(O)=O FUZZWVXGSFPDMH-UHFFFAOYSA-N 0.000 description 1
- 125000004051 hexyl group Chemical group [H]C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])* 0.000 description 1
- 125000003707 hexyloxy group Chemical group [H]C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])O* 0.000 description 1
- 102000053391 human F Human genes 0.000 description 1
- 108700031895 human F Proteins 0.000 description 1
- XMBWDFGMSWQBCA-UHFFFAOYSA-N hydrogen iodide Chemical compound I XMBWDFGMSWQBCA-UHFFFAOYSA-N 0.000 description 1
- 230000003301 hydrolyzing effect Effects 0.000 description 1
- 238000009776 industrial production Methods 0.000 description 1
- 239000000543 intermediate Substances 0.000 description 1
- 229910052740 iodine Inorganic materials 0.000 description 1
- 150000002500 ions Chemical class 0.000 description 1
- 210000005053 lamin Anatomy 0.000 description 1
- 239000002075 main ingredient Substances 0.000 description 1
- 238000001819 mass spectrum Methods 0.000 description 1
- HEBKCHPVOIAQTA-UHFFFAOYSA-N meso ribitol Natural products OCC(O)C(O)C(O)CO HEBKCHPVOIAQTA-UHFFFAOYSA-N 0.000 description 1
- 125000005948 methanesulfonyloxy group Chemical group 0.000 description 1
- 125000000956 methoxy group Chemical group [H]C([H])([H])O* 0.000 description 1
- 125000001160 methoxycarbonyl group Chemical group [H]C([H])([H])OC(*)=O 0.000 description 1
- 125000002496 methyl group Chemical group [H]C([H])([H])* 0.000 description 1
- 125000001570 methylene group Chemical group [H]C([H])([*:1])[*:2] 0.000 description 1
- 125000000325 methylidene group Chemical group [H]C([H])=* 0.000 description 1
- 125000002816 methylsulfanyl group Chemical group [H]C([H])([H])S[*] 0.000 description 1
- YKYONYBAUNKHLG-UHFFFAOYSA-N n-Propyl acetate Natural products CCCOC(C)=O YKYONYBAUNKHLG-UHFFFAOYSA-N 0.000 description 1
- 125000001038 naphthoyl group Chemical group C1(=CC=CC2=CC=CC=C12)C(=O)* 0.000 description 1
- 125000001624 naphthyl group Chemical group 0.000 description 1
- 125000005186 naphthyloxy group Chemical group C1(=CC=CC2=CC=CC=C12)O* 0.000 description 1
- 125000005029 naphthylthio group Chemical group C1(=CC=CC2=CC=CC=C12)S* 0.000 description 1
- 150000002825 nitriles Chemical class 0.000 description 1
- 125000000449 nitro group Chemical group [O-][N+](*)=O 0.000 description 1
- 125000004971 nitroalkyl group Chemical group 0.000 description 1
- 125000004999 nitroaryl group Chemical group 0.000 description 1
- 125000006501 nitrophenyl group Chemical group 0.000 description 1
- 235000005985 organic acids Nutrition 0.000 description 1
- 238000006053 organic reaction Methods 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 230000001590 oxidative effect Effects 0.000 description 1
- 125000001820 oxy group Chemical group [*:1]O[*:2] 0.000 description 1
- NWVVVBRKAWDGAB-UHFFFAOYSA-N p-methoxyphenol Chemical compound COC1=CC=C(O)C=C1 NWVVVBRKAWDGAB-UHFFFAOYSA-N 0.000 description 1
- 125000004115 pentoxy group Chemical group [*]OC([H])([H])C([H])([H])C([H])([H])C(C([H])([H])[H])([H])[H] 0.000 description 1
- 125000001147 pentyl group Chemical group C(CCCC)* 0.000 description 1
- 239000002304 perfume Substances 0.000 description 1
- 125000000951 phenoxy group Chemical group [H]C1=C([H])C([H])=C(O*)C([H])=C1[H] 0.000 description 1
- 125000006678 phenoxycarbonyl group Chemical group 0.000 description 1
- 125000003356 phenylsulfanyl group Chemical group [*]SC1=C([H])C([H])=C([H])C([H])=C1[H] 0.000 description 1
- 230000000704 physical effect Effects 0.000 description 1
- 229960005235 piperonyl butoxide Drugs 0.000 description 1
- 125000004591 piperonyl group Chemical group C(C1=CC=2OCOC2C=C1)* 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 229960003857 proglumide Drugs 0.000 description 1
- 239000003380 propellant Substances 0.000 description 1
- 125000004368 propenyl group Chemical group C(=CC)* 0.000 description 1
- 125000001501 propionyl group Chemical group O=C([*])C([H])([H])C([H])([H])[H] 0.000 description 1
- 125000002572 propoxy group Chemical group [*]OC([H])([H])C(C([H])([H])[H])([H])[H] 0.000 description 1
- 229940090181 propyl acetate Drugs 0.000 description 1
- 125000001436 propyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])[H] 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 230000036647 reaction Effects 0.000 description 1
- 238000001953 recrystallisation Methods 0.000 description 1
- 239000012925 reference material Substances 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 230000007017 scission Effects 0.000 description 1
- 238000007086 side reaction Methods 0.000 description 1
- 238000001228 spectrum Methods 0.000 description 1
- HXJUTPCZVOIRIF-UHFFFAOYSA-N sulfolane Chemical compound O=S1(=O)CCCC1 HXJUTPCZVOIRIF-UHFFFAOYSA-N 0.000 description 1
- 150000003457 sulfones Chemical class 0.000 description 1
- 150000003462 sulfoxides Chemical class 0.000 description 1
- 239000011593 sulfur Substances 0.000 description 1
- YLQBMQCUIZJEEH-UHFFFAOYSA-N tetrahydrofuran Natural products C=1C=COC=1 YLQBMQCUIZJEEH-UHFFFAOYSA-N 0.000 description 1
- 231100000331 toxic Toxicity 0.000 description 1
- 230000002588 toxic effect Effects 0.000 description 1
- 231100000027 toxicology Toxicity 0.000 description 1
- WZEOZJQLTRFNCU-UHFFFAOYSA-N trifluoro(trifluoromethoxy)methane Chemical compound FC(F)(F)OC(F)(F)F WZEOZJQLTRFNCU-UHFFFAOYSA-N 0.000 description 1
- 210000000689 upper leg Anatomy 0.000 description 1
- 150000003672 ureas Chemical class 0.000 description 1
- NQPDZGIKBAWPEJ-UHFFFAOYSA-N valeric acid Chemical compound CCCCC(O)=O NQPDZGIKBAWPEJ-UHFFFAOYSA-N 0.000 description 1
- 125000000391 vinyl group Chemical group [H]C([*])=C([H])[H] 0.000 description 1
- 239000000341 volatile oil Substances 0.000 description 1
- 239000002351 wastewater Substances 0.000 description 1
- 239000000811 xylitol Substances 0.000 description 1
- HEBKCHPVOIAQTA-SCDXWVJYSA-N xylitol Chemical compound OC[C@H](O)[C@@H](O)[C@H](O)CO HEBKCHPVOIAQTA-SCDXWVJYSA-N 0.000 description 1
- 229960002675 xylitol Drugs 0.000 description 1
- 235000010447 xylitol Nutrition 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07D—HETEROCYCLIC COMPOUNDS
- C07D317/00—Heterocyclic compounds containing five-membered rings having two oxygen atoms as the only ring hetero atoms
- C07D317/08—Heterocyclic compounds containing five-membered rings having two oxygen atoms as the only ring hetero atoms having the hetero atoms in positions 1 and 3
- C07D317/44—Heterocyclic compounds containing five-membered rings having two oxygen atoms as the only ring hetero atoms having the hetero atoms in positions 1 and 3 ortho- or peri-condensed with carbocyclic rings or ring systems
- C07D317/46—Heterocyclic compounds containing five-membered rings having two oxygen atoms as the only ring hetero atoms having the hetero atoms in positions 1 and 3 ortho- or peri-condensed with carbocyclic rings or ring systems condensed with one six-membered ring
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C45/00—Preparation of compounds having >C = O groups bound only to carbon or hydrogen atoms; Preparation of chelates of such compounds
Definitions
- the present invention relates to a sommet of benzyl compound having a leaving group (for example, a halogen atom) and hexamethylenetetramine.
- et relates to a method for producing a benzaldehyde compound by a reaction. More specifically, Taba.
- the present invention relates to an industrially advantageous method that makes it possible to produce the target compound in a yield that is industrially satisfactory and to reduce the amount of reaction waste produced.
- the benzaldehyde compound produced by the method of the present invention is a useful compound as a synthetic intermediate and a fragrance for pharmaceuticals and agricultural chemicals.
- Patent Document 1 Japanese Patent Application Laid-Open No. 2002-193872
- Patent Document 2 Japanese Patent Application Laid-Open No. 54-135770
- Non-Patent Document 1 R. C. Larock, Comprehensive Organic Transform ions. Second edition, ppll98-1620 (1999), lohn Wi 1 ey & Sons, Inc.
- Non-Patent Document 2 Organic React ions, Chapter 4, The Somme 1 et react ion, ppl97-217 (1954) John Wiley & Sons, Inc.
- Non-Patent Document 3 Food and Cosmetics Toxicology, Volume 12 , Issues 7-8, December 1974, pp907-908
- Non-Patent Document 1 the synthesis until obtaining the starting benzyl alcohol compound, benzoyl halide compound or dihalomethylbenzene compound may be complicated.
- aromatic aldehyde synthesis using highly toxic carbon monoxide, hydrogen cyanide, and the like also has safety problems, so it was not sufficient as an industrial production method.
- Non-Patent Document 3 is a perfume raw material.
- Patent Document 2 reports a method using a salt of piperonyl chloride and hexamethylenetetramine.
- this salt is subjected to a Sommerre reaction to produce a benzaldehyde compound.
- the generated product is once isolated, purified and used, so the operation is complicated.
- an aqueous acetic acid solution or aqueous propionic acid solution containing ammonia is used as a solvent.
- the amount of ammonia used is a large amount of 0.5 to 4 mol, preferably 2 to 3.5 mol, relative to 1 mol of the salt of piperonyl chloride and hexamethylenetetramine.
- a large amount of new ammonia-derived waste was generated, which resulted in an increase in environmental load, and this method was not an industrially superior method.
- Reference 2 does not completely describe the ratio of the amount of piperonyl chloride used for the production of salt to hexamethylenetetramine. Disclosure of the invention
- hexamethylenetetramine has 4 amine nitrogen atoms (> N ⁇ ) per molecule, so 1 molecule of hexamethylenetetramine ⁇ 4 molecules of benzyl compounds (eg benzyl chloride compounds), and focusing on the possibility that multiple types of salts may be formed, continued earnest research, as a result, the present invention was completed .
- the present invention greatly reduces the amount of hexamethylenetetramine used in the production of a benzaldehyde compound from a benzyl compound having a leaving group and hexamethylenetetramine compared to the amount used in the conventional method.
- an object of the present invention is to provide a method for producing the target benzaldehyde compound with a sufficiently satisfactory yield in industry.
- the method for producing a benzaldehyde compound of the present invention comprises a leaving group-containing benzyl compound represented by the following general formula (I):
- L represents a halogen atom, a hydroxysulfonyloxy group, an alkylsulfonyloxy group having or not having a substituent, and an aryl having or not having a substituent.
- + y + z represents the integer 2 or 3
- any two of the alkoxy substituents: OR 0 R 2 , OR 3 are bonded to each other to form an alkylenedioxy group on the benzene ring
- a cyclic structure can be formed with two carbon atoms located adjacent to each other. ]
- Hexamethylene tephmine is reacted in a solvent, and the resulting benzyl compound nohexamethylene tetrane salt and the solvent (1), or the detachment of the formula (I)
- a mixture (2) of a benzyl compound containing a group, a solvent, and hexamethylene teramine is mixed with water and an acid to produce a mixed reaction solution, and this fit, combined reaction solution is added.
- the molar ratio of the leaving group-containing benzil compound to the molar amount is adjusted to 0.25 or more, but less than 1.00. It is characterized by adjusting.
- the leaving group-containing benzyl compound of the formula (I) is represented by the following general formula (m) 3, 4 —alkylenedioxybenzil compounds represented:
- L is as defined above, and R 4 represents an alkylene group.
- the 3,4-alkylenedibenzyl compound of the above formula ( ⁇ ) is a 3,4-methylenedioxybenzyl compound.
- the pH of the reaction mixture in the step of producing a compound of Sugame Self Formula (() is adjusted to 6 or less.
- the acid is sulfuric acid, phosphoric acid, hydrochloric acid, aliphatic carboxylic acid, trifluoroacetic acid, aliphatic sulfonic acid, aromatic sulfonic acid, and fluoro.
- the solvent of the formula (I) includes at least one selected from aliphatic sulfonic acids.
- the amount of hexamethylene tetramine used is reduced, and accordingly, the solvent
- a benzyl compound having a leaving group used as a starting material is represented by the following general formula (I).
- L is a halogen atom, a hydroxysulfonyloxy group, an alkylsulfonyl group having or not having a substituent, and having or not having a substituent.
- x, y, z are the number of alkoxy substituents, each representing an integer of 0 or 1, and a combination of integers such that X + y + z force 1 to 3 and R i to R 3
- ⁇ R 2 , ⁇ R 3 are any two of A
- TO ⁇ forms an alkylenedioxy group, and can form a cyclic structure with two carbon atoms adjacent to each other on the benzene ring.
- the halogen atom represented by L is a fluorine, chlorine, bromine or iodine atom.
- examples of the alkylsulfonyloxy group represented by L and having no substituent include a methanesulfonyloxy group.
- An example of the alkylsulfonyloxy group having a substituent is an octaalkylsulfonyloxy group such as a trifluorenesulfonylsulfonyl group.
- arylsulfonylsulfonyl group represented by L and having no substituent a benzenesulfonoxy group can be exemplified, and as the arylsulfonylsulfonyl group having a substituent, toluenesulfonylsulfonyl An oxy group can be mentioned.
- the leaving group L is preferably a halogen atom, and more preferably a chlorine atom or a bromine atom.
- Each of these groups includes various isomers.
- the hydrocarbon group having a substituent is a group in which a substituent is bonded to the hydrocarbon group, and as such a substituent, an oxygen atom-containing substituent, a nitrogen atom-containing Substituents and sulfur-containing substituents.
- the oxygen atom-containing substituent is bonded to the hydrocarbon group via an oxygen atom.
- an oxygen atom for example, a methoxy group, an ethoxy group, a propoxy group, a butoxy group, a pentyloxy group, a hexyloxy group, a heptyloxy group, an alkoxy group such as a benzyloxy group; a phenoxy group, a trioxy group, a naphthyloxy group, etc.
- These groups each include various isomers.
- Examples of the nitrogen atom-containing substituent include a cyano group and a nitro group.
- Examples of the hydrocarbon group substituted by the nitrogen atom containing substituent include carbon atoms such as a cyanomethyl group and a nitromethyl group. Examples include 1 to 8 cyanoalkyl groups or nitroalkyl groups; cyanoaryl groups such as cyanophenyl groups and nitrophenyl groups, and nitroaryl groups.
- sulfur atom-containing substituent examples include a substituent bonded to the hydrocarbon group via a sulfur atom, for example, an alkylthio group having 1 to 8 carbon atoms such as a methylthio group, an ethylthio group, a propylthio group, a phenylthio group, and the like.
- an alkylthio group having 1 to 8 carbon atoms such as a methylthio group, an ethylthio group, a propylthio group, a phenylthio group, and the like.
- x, y, and z are the number of alkoxy substituents and represent an integer of 0 or 1, and x + y + z is an integer combination in which 1 to 3 is 1 to 3.
- R 4 represents an alkylene group, for example, a methylene and ethylene group.
- Preferred examples of the 10—R 4 —O— group include a methylenedioxy group (10 — CH 2 —O—) and an ethylenedioxy group (10—C 2 H 4 — 0—).
- the leaving group-containing benzyl compound represented by the general formula (I) represented by the general formula (I)
- benzyl chloride compounds are, for example,
- the benzene compound represented by the following general formula (IV), formaldehyde or an equivalent thereof, for example, paraformaldehyde, and hydrogen chloride are subjected to Blanc-Quelet reaction, and the following reaction is performed. :
- the benzyl chloride compound-containing reaction mixture produced by the above reaction may be used for the method of the present invention as it is, or the benzyl chloride compound may be purified and used for the method of the present invention.
- a benzyl compound Z-hexamethylenetetramine salt obtained by subjecting a leaving group-containing benzyl compound of formula (I) and hexamethylenetetramine to a salt formation reaction in a solvent, and In a mixed solution (1) containing the solvent or a mixed solution (2) of the leaving group-containing benzyl compound of the formula (I), the solvent, and hexamethylenetetramine, water and an acid Are mixed to prepare a mixed reaction solution, and this mixed reaction solution is subjected to a reaction (Sommelet reaction) under heating and reflux to produce a benzaldehyde compound of the above formula (().
- a reaction Sudlet reaction
- the molar amount of hexamethylenetetraamine used for the preparation of the mixed solution (1) or the molar amount of hexamethylenetetramine contained in the mixed solution (2) The molar ratio of I) to the molar amount of the leaving group-containing benzyl compound is adjusted to 0.25 or more, but less than 1.00, preferably 0.30 to 0.95, more preferably 0.35 to 0.90.
- the mixed solution (1) or the mixed solution (2) used for the reaction for producing the benzaldehyde compound of the formula (() contains a solvent, and the benzaldehyde compound producing reaction (Sommelet reaction). Is carried out in the presence of this solvent. This solvent dissolves the leaving group-containing benzyl compound of formula (I) used as a starting material, and
- the solvent for the method of the present invention include water, formic acid, acetic acid, propionic acid, and aliphatic sulfonic acids such as trifluoric acetic acid, and organic sulfonic acids such as methylsulfonic acid and trifluoromethanesulfonic acid.
- Organic acids such as: aliphatic alcohols such as methanol, ethanol, isop D-pyr alcohol, t_butyl alcohol, ethylene glycol, ⁇ U ethylene glycol, n-pentane, n-hexane, n-Aliphatic hydrocarbons such as heptane and cyclohexane, N, N-dimethylformamide, N, N-dimethylacetamide, N-amides such as methylpyrrolidone, N, N, _dimethylimidazolidino Ureas such as ethylene, ethers such as jetyl ether, diisopropyl ether, tetrahydrofuran, dioxane, benzene, toluene
- Aromatic hydrocarbons such as ene and xylene, halogenated aromatic hydrocarbons such as chlorobenzene, 1,2-dichlorobenzene, 1,3-dichlorobenzene, and 1,4-d
- Aromatic hydrocarbons, alcohols, aliphatic carboxylic acids are used. More preferably, toluene, methanol, ethanol, formic acid and acetic acid (glacial acetic acid) are used, and acetic acid (glacial acetic acid) is particularly preferable. These solvents may be used as a single species or as a mixture of two or more species.
- organic acid when used as the solvent, the organic acid is represented by the formula (I), when an organic acid is used as the solvent, the organic acid is represented by the formula (I), when an organic acid is used as the solvent, the organic acid is represented by the formula (I), when an organic acid is used as the solvent, the organic acid is represented by the formula (I), when an organic acid is used as the solvent, the organic acid is represented by the formula (I), when an organic acid is used as the solvent, the organic acid is represented by the formula (
- the amount of the solvent used is appropriately set according to the type thereof, the uniformity of the reaction solution containing the solvent, and the stirring conditions.
- the solvent contains a leaving group of the formula (I) For every mole of benzyl compound:! It is -5000ml, More preferably, it is 10-1000ml, More preferably, it is 50-500ml.
- the mixed solution (1) contains a benzyl compound nohexamethylenetetramine salt produced by the reaction of a leaving group-containing benzyl compound of the formula (I) with hexamethylenetetramine in the presence of a solvent.
- the reaction mixture is preferably left as it is, but the solution of the product salt dissolved in the solvent may be separated from the reaction mixture, or the product salt may be separated from the reaction mixture.
- the solution may be isolated and dissolved in the solvent.
- the salt-forming reaction in a solvent of the leaving group-containing benzyl compound of formula (I) and hexamethylenetetramine is preferably -20 to 150, more preferably It is preferably 0 to 140, more preferably 10 to 130, while the vapor generated as necessary is cooled and liquefied and refluxed, and the reaction time is preferably 1 to 10 hours. Preferably it is 2 to 5 hours.
- the reaction pressure is not particularly limited, but it is preferably carried out at normal pressure.
- the reaction atmosphere may be air, or an inert gas such as nitrogen or argon. It may be used.
- the mixed solution (2) may be prepared by mixing the leaving group-containing benzyl compound of the formula (I), its solvent, and hexamethylenetetramine in any order or the same manner.
- the acid used for the reaction between the mixed solution (1) or (2) and water and an acid is a mineral acid such as sulfuric acid, phosphoric acid and hydrochloric acid; an aliphatic carboxylic acid such as, for example, Formic acid, acetic acid, propionic acid, citric acid, trifluoroacetic acid, etc .; and organic sulfonic acids such as methylsulfonic acid, trifluoromethanesulfonic acid, benzenesulfonic acid, and toluenesulfonic acid, preferably Mineral acids, organic sulfonic acids, and trifluoroacetic acid are used, more preferably, sulfuric acid, phosphoric acid, and hydrochloric acid are used, and more preferably, an aqueous hydrochloric acid solution is used.
- a mineral acid such as sulfuric acid, phosphoric acid and hydrochloric acid
- an aliphatic carboxylic acid such as, for example, Formic acid, acetic acid, propionic acid
- the above acids may be used as a single species or as a mixture of two or more species.
- the acid and water may be separately mixed in the liquid mixture (1) or (2), or may be mixed in advance and mixed with the liquid mixture (1) or (2) as an acid aqueous solution.
- the acid may be previously dissolved in an organic solvent, and this solution may be mixed with the liquid mixture (1) or (2) together with water or separately from water.
- Mixing of the mixture (1) or (2) with water and acid is preferably carried out by dropping water and acid into the mixture (1) or (2).
- the mixed system is preferably heated to 20 to 130, more preferably 40 to 120 t :, and more preferably 60 to 110, and the generated vapor is cooled and liquefied and refluxed.
- the ⁇ of the mixed reaction solution prepared as described above is preferably adjusted to 6 or less by the acid, and more preferably the ⁇ value is 0.01 to 6.0, and more preferably 0.05 to 3.0.
- the water contained in the mixed reaction solution is preferably 0.1 to 10 ml, more preferably 0.3 to 1 g of the benzyl compound containing a leaving group of the formula (I). 5 ml, more preferably 0.5 to 2 ml.
- the desired reaction intermediate may not be obtained when the target aldehyde compound is produced by the decomposition of the salt, or the target aldehyde may be obtained from the reaction intermediate. Conversion to compounds may not proceed sufficiently. If it is lower than 0.01, undesirable side reactions may occur, for example, cleavage of alkoxy substituents.
- the target aldehyde compound is decomposed by the salt decomposition as described above.
- the desired reaction intermediate may not be obtained, or the change from the reaction intermediate to the target aldehyde may not proceed sufficiently. Above this, the reaction rate becomes slow, for example, the desired reaction time may be significantly increased.
- the mixed reaction solution thus prepared is preferably 20 to 130 ⁇ , more preferably 40 to 120, more preferably 60 to 110, more preferably 1 to 10 hours, and more.
- the mixture is heated for 2 to 5 hours under stirring and refluxing, whereby the benzaldehyde compound formation reaction (Sommelet reaction) of the formula ( ⁇ ) proceeds.
- the reaction pressure in the above reaction is not particularly limited, but it is preferably carried out under normal pressure, the reaction atmosphere is not particularly limited, and may be carried out in air, or nitrogen or argon. It may be performed in an inert gas.
- the benzaldehyde compound produced by the method of the present invention is subjected to an appropriate isolation / purification method such as extraction, filtration, concentration, distillation, rectification, recrystallization, crystallization, column chromatography and Z or high-performance liquid. It can be purified by chromatography.
- the molar amount of hexamethylenetetramine contained in the mixed solution (1) that is, the molar amount of hexamethylenetetramine used in the preparation of the mixed solution (1) or the mixed solution (2)
- the molar ratio of the molar amount of hexamethylenetetramine contained to the molar amount of the leaving group-containing benzyl compound of the formula (I) is 0.25 or more, but less than 1.00, preferably 0.30 to It is adjusted to 0.95, more preferably 0.35 to 0.90.
- the amount of hexamethylenetetramine used is much less than that of the conventional method, and the amount of solvent (for example, acetic acid) reduced accordingly.
- the target benzaldehyde compound can be produced with industrially satisfactory reaction efficiency.
- the reaction efficiency can be expressed by the geometric average reaction yield measured and calculated as described below.
- the molar yield (%) of the target compound is calculated from the yield (mole) of the target benzaldehyde compound and the molar amount of the starting benzil compound. This molar yield (%) is referred to as the yield a (%) based on the starting benzyl compound.
- the synergistic average reaction yield C (%) depends on both the molar yield a based on the starting benzyl compound of formula (I) and the molar yield b based on hexamethylenetetramine. This is a parameter that shows the yield.
- the molar ratio of the hexylene tetramine molar amount of the mixed solution (1) or (2) to the molar amount of the leaving group-containing benzyl compound of the formula (I) is 0.25 or more and less than 1.00.
- the value of the geometric average reaction yield; C can be clearly increased in comparison with the conventional technique when the mole ratio is 1.0 or more.
- the molar ratio is less than 0.25.
- Piperonyl chloride 17.06 g (lOOmmo 1) and 8.5 ml of acetic acid with a purity of 96% or more are mixed, and to this is added 3.50 g (25 mmol) of hexaethylene tetramine at a temperature of 20 to 27, and refluxed at a temperature of 115 to 125 ⁇ . The mixture was stirred and reacted to prepare a mixture containing piperonyl chloride Z-hexamethylenetetramine salt (1).
- the resulting organic solution was analyzed by high performance liquid chromatography (absolute calibration method), and the yield of the Helioto mouth pin was 8.66 g.
- the yield of Helioto Mouth Pin based on piperonyl chloride was 58%, the yield based on hexamethylenetetramine was 231%, and the synergistic average reaction yield was 112%.
- the physical property values of the obtained helioto mouth pin were as follows.
- the mixture was stirred for 2 hours to prepare a mixed solution (1) containing piperonyl chloride / hexamethylenetetramine salt.
- a mixed solution (1) containing piperonyl chloride / hexamethylenetetramine salt.
- 5.7 ml of water and 4.2 ml of 35% strength by weight aqueous hydrochloric acid solution were dropped into the mixed solution (1) while returning at a temperature of 115 to 125, and the pH of the resulting mixed reaction solution was adjusted with a pH test paper. It was confirmed to be 2-4.
- the mixed reaction was allowed to react with stirring at a temperature of 90-100 for 2 hours.
- the resulting reaction solution was allowed to cool to room temperature, and then separated and extracted using 100 ml of ethyl acetate, and the resulting organic layer was washed successively with water, saturated aqueous sodium hydrogen carbonate, and saturated brine. . After washing, the organic layer solution was quantitatively analyzed by high performance liquid chromatography (absolute calibration method), and the yield of the helioto mouth pin was 10.4 g.
- the reaction yield based on piperonyl chloride was 81.5%
- the reaction yield based on hexamethylenetetramine was 209%
- the geometric average reaction yield was 131%.
- the mixed reaction liquid was heated and stirred for 2 hours while refluxing at a temperature of 90 to 100 to synthesize a helioto mouth pin. After completion of the reaction, the resulting reaction solution was allowed to cool to room temperature, followed by separation / extraction with 100 ml of ethyl acetate, and the resulting organic layer was washed successively with water, saturated aqueous sodium hydrogen carbonate, and saturated brine. After washing, the resulting organic layer solution is subjected to high performance liquid chromatography.
- the resulting reaction solution was cooled to room temperature, mixed with 100 ml of ethyl acetate, separated and extracted, and the resulting organic layer was mixed with water, saturated aqueous sodium bicarbonate, and saturated brine. And washed sequentially.
- the yield of the helioto mouth pin was 12.4 g.
- the reaction yield based on piperonyl chloride was 82.6%, the reaction yield based on hexamethylenetetramine was 165%, and the synergistic average reaction yield was 117%.
- the resulting reaction solution was cooled to room temperature, mixed with 100 ml of ethyl acetate, separated and extracted, and the resulting organic layer was mixed with water, saturated aqueous sodium bicarbonate, and saturated brine. And washed sequentially.
- the yield of the Helioto mouth pin was 11.59.
- the reaction yield based on piperonyl chloride was 77.2%, the reaction yield based on hexamethylenetetramine was 103%, and the synergistic average reaction yield was 89%.
- piperonyl chloride 17.06 g (lOOmmol) is dissolved in 8.5 ml acetic acid and 11.92 g (85 mmol) hexamethylenetetramine is mixed with this solution at 115-125. The mixture was heated and stirred for 2 hours while refluxing to prepare a mixed solution (1) containing piperonyl chloride // hexamethylenetetramine salt.
- the resulting reaction solution is cooled to room temperature, mixed with 100 ml of ethyl acetate, and separated and extracted, and the resulting organic layer is washed with water, saturated aqueous sodium bicarbonate, and saturated brine. And washed sequentially.
- the yield of the helioto mouth pin was 12.98.
- the reaction yield based on piperonyl chloride was 86.4%
- the reaction yield based on hexamethylene teramine was 101.7%
- the synergistic average reaction yield was 94%.
- the resulting reaction solution was allowed to cool to room temperature, and extracted with 100 ml of ethyl acetate, and the resulting organic layer was washed successively with water, saturated aqueous sodium hydrogen carbonate, and saturated brine. After washing, the obtained organic layer solution was quantitatively analyzed by high performance liquid chromatography (absolute calibration curve method).
- the yield of heliotropin was 9.5 g.
- the reaction yield based on piperonyl chloride was 63.3%, the reaction yield based on hexamethylenetetramine was 127%, and the synergistic average reaction yield was 89%.
- the solution (pH: 2 to 4; pH test paper) was stirred for 3 hours at a temperature of 90 to 100 to synthesize 4-methoxybenzaldehyde.
- the resulting reaction solution was allowed to cool to room temperature, and then 100 ml of ethyl acetate was added.
- the resulting organic layer was washed with water, and further washed successively with saturated aqueous sodium hydrogen carbonate and saturated brine. After washing, the resulting organic layer solution was analyzed by high-performance liquid chromatography (absolute calibration method). As a result, the yield of 4-methoxybenzaldehyde was 6.1 g.
- the reaction yield based on 4-methoxybenzyl chloride was 89.6%
- the reaction yield based on hexamethylenetetramine was 271%
- the synergistic average reaction yield was 156%.
- Piperonyl chloride 17.06 g (lOOmniol), hexamethylenetetramine 28.04 g (200 mmol), acetic acid 34 ml, water 34 ml, and a 35% strength by weight hydrochloric acid aqueous solution 25 ml are mixed in a 200 ml 3 ml flask in the stated order.
- the mixture was heated to the same temperature as in Example 1 and stirred at 90-100 for 4 hours to prepare a reaction liquid containing a helioto mouth pin.
- the reaction solution was allowed to cool to room temperature, and then subjected to separation and extraction using 100 ml of ethyl acetate.
- the resulting organic layer was washed successively with water, saturated aqueous sodium hydrogen carbonate, and saturated brine. After washing, the organic layer solution was quantitatively analyzed by high performance liquid chromatography (absolute calibration curve method).
- the yield of the helioto mouth pin was 12.2 g.
- the reaction yield based on piperonyl chloride was 81.4%, but the reaction yield based on hexamethylenetetramine was as low as 40.6%, and a large amount of hexamethylenetetramine was consumed and discharged. For this reason, the geometric average reaction yield was 57%.
- Piperonyl chloride (17.06 g, lOOmmol) and acetic acid (8.5ml) are mixed in a 200ml 3 'flask, then hexamethylenetetramine 2.10g (15mmol) is added and heated as in Example 1 and refluxed. Then, the mixture was stirred for 2 hours to prepare a reaction solution containing piperonylchloridonohexamethylenetetramine salt.
- Piperonyl chloride (17.06 g (lOOmmol)) and acetic acid (8.5 ml) are mixed in a 200 ml three-neck flask, and hexamethylenetetramine (14.72 g (105 mmol)) is added thereto, followed by heating and refluxing as in Example 1. After stirring for 2 hours, a reaction solution containing piperonyl chloride Z-hexamethylenetetramine was prepared.
- the resulting reaction solution is allowed to cool to room temperature, 150 ml of ethyl acetate is added thereto for liquid separation / extraction, and the resulting organic layer is washed with water, saturated aqueous sodium bicarbonate, and saturated brine. Washed sequentially. After washing, the obtained organic layer solution was quantitatively analyzed by high-performance liquid chromatography (absolute calibration curve method).
- the yield of 4-methoxybenzaldehyde was 2.5 g.
- the reaction yield based on 4-methoxybenzyl chloride was 36.7%
- the reaction yield based on hexamethylenetetramine was 18.3%
- the synergistic average reaction yield was 26%.
- the amount of acetic acid used as the solvent is 1 Z 4 with respect to the amount of acetic acid used in Comparative Example 1 according to the prior art, and also in Example 9
- the amount of acetic acid used in Comparative Example 5 was 15 or less. That is, in the method of the present invention, the amount of acetic acid used as a solvent can be greatly reduced.
- the geometric average reaction yield of the target compound; C was 79 to 156%.
- the geometric average reaction yield; C is 36 to 53%, and when the molar ratio is 1.0 or more (Comparative Examples 1 and 4). , 5) was 26 to 68%, and it was confirmed that none of them was equivalent to the method of the present invention.
- Industrial applicability of the invention The method of the present invention reduces the amount of hexamethylenetetramine used and maintains a level that satisfies industrial reaction efficiency, and also reduces the amount of reaction waste generated, and the cost of treating reaction waste. It has succeeded in lowering and has a high practical effect.
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CN104418717A (zh) * | 2013-09-06 | 2015-03-18 | 宿迁科思化学有限公司 | 一种对甲氧基苯甲醛的制备方法 |
WO2016103058A1 (en) | 2014-12-23 | 2016-06-30 | Anthea Aromatics Private Limited | An efficient process for the synthesis of alkoxy substituted benzaldehydes |
CN113717037A (zh) * | 2021-07-22 | 2021-11-30 | 镇江中智化学科技有限公司 | 一种2,5-二甲氧基苯甲醛的绿色合成方法 |
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CN101735201B (zh) * | 2009-12-17 | 2012-05-30 | 宁夏康亚药业有限公司 | 一种吡贝地尔的制备方法 |
CN101830891A (zh) * | 2010-05-18 | 2010-09-15 | 沈阳药科大学 | 一种吡贝地尔的制备方法 |
CN103819318A (zh) * | 2012-11-19 | 2014-05-28 | 王香善 | 苯甲醛的制备新方法 |
CN105503814B (zh) * | 2015-12-07 | 2018-11-20 | 东北制药集团股份有限公司 | 一种洋茉莉醛的制备方法 |
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JPS5427530A (en) * | 1977-08-03 | 1979-03-01 | Mitsubishi Yuka Yakuhin Kk | Process for preparing 22chloroo 44aryloxybenzaldehyde |
JPS54135770A (en) * | 1978-04-08 | 1979-10-22 | Ube Ind Ltd | Preparation of heliotropin |
JPS5634653A (en) * | 1979-08-28 | 1981-04-06 | Dynamit Nobel Ag | Manufacture of terephthalaldehyde or isophthalaldehyde form ppxylol or mmxylol |
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JPS5427530A (en) * | 1977-08-03 | 1979-03-01 | Mitsubishi Yuka Yakuhin Kk | Process for preparing 22chloroo 44aryloxybenzaldehyde |
JPS54135770A (en) * | 1978-04-08 | 1979-10-22 | Ube Ind Ltd | Preparation of heliotropin |
JPS5634653A (en) * | 1979-08-28 | 1981-04-06 | Dynamit Nobel Ag | Manufacture of terephthalaldehyde or isophthalaldehyde form ppxylol or mmxylol |
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Cited By (8)
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CN104418717A (zh) * | 2013-09-06 | 2015-03-18 | 宿迁科思化学有限公司 | 一种对甲氧基苯甲醛的制备方法 |
CN104418717B (zh) * | 2013-09-06 | 2016-07-13 | 宿迁科思化学有限公司 | 一种对甲氧基苯甲醛的制备方法 |
WO2016103058A1 (en) | 2014-12-23 | 2016-06-30 | Anthea Aromatics Private Limited | An efficient process for the synthesis of alkoxy substituted benzaldehydes |
US20170349566A1 (en) * | 2014-12-23 | 2017-12-07 | Anthea Aromatics Private Limited | An efficient process for the synthesis of alkoxy substituted benzaldehydes |
JP2018505150A (ja) * | 2014-12-23 | 2018-02-22 | アンシア アロマティクス プライベート リミテッド | アルコキシ置換ベンズアルデヒドの合成のための効率的なプロセス |
US10633360B2 (en) * | 2014-12-23 | 2020-04-28 | Anthea Aromatics Private Limited | Efficient process for the synthesis of alkoxy substituted benzaldehydes |
CN113717037A (zh) * | 2021-07-22 | 2021-11-30 | 镇江中智化学科技有限公司 | 一种2,5-二甲氧基苯甲醛的绿色合成方法 |
CN113717037B (zh) * | 2021-07-22 | 2023-09-12 | 镇江中智化学科技有限公司 | 一种2,5-二甲氧基苯甲醛的绿色合成方法 |
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